WO2005086310A1 - Automatic reset device particularly for residual current-operated circuit breakers and the like - Google Patents

Automatic reset device particularly for residual current-operated circuit breakers and the like Download PDF

Info

Publication number
WO2005086310A1
WO2005086310A1 PCT/EP2005/001993 EP2005001993W WO2005086310A1 WO 2005086310 A1 WO2005086310 A1 WO 2005086310A1 EP 2005001993 W EP2005001993 W EP 2005001993W WO 2005086310 A1 WO2005086310 A1 WO 2005086310A1
Authority
WO
WIPO (PCT)
Prior art keywords
residual current
circuit breaker
operated circuit
control means
actuator
Prior art date
Application number
PCT/EP2005/001993
Other languages
French (fr)
Inventor
Domenico Bosatelli
Augusto Contardi
Original Assignee
Gewiss S.P.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gewiss S.P.A. filed Critical Gewiss S.P.A.
Priority to CN2005800116331A priority Critical patent/CN1950982B/en
Publication of WO2005086310A1 publication Critical patent/WO2005086310A1/en
Priority to IL177567A priority patent/IL177567A/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/33—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
    • H02H3/334—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers with means to produce an artificial unbalance for other protection or monitoring reasons or remote control
    • H02H3/335—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers with means to produce an artificial unbalance for other protection or monitoring reasons or remote control the main function being self testing of the device
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/06—Details with automatic reconnection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/06—Details with automatic reconnection
    • H02H3/066—Reconnection being a consequence of eliminating the fault which caused disconnection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/33—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/33—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
    • H02H3/338—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers also responsive to wiring error, e.g. loss of neutral, break

Definitions

  • the present invention relates to an automatic reset device particularly for residual current-operated circuit breakers and the like. More particularly, the invention relates to a device that allows to reset automatically a residual current-operated circuit breaker following its release, after checking the correct operation of the system.
  • residual current-operated circuit breakers are normally provided in home and industrial systems in order to prevent a fault current from causing danger to users and to the loads connected to the electric line. Essentially, the residual current-operated circuit breaker, when it detects the fault current, disconnects the line, accordingly interrupting the supply of power to the load or loads arranged downstream.
  • the residual current- operated circuit breaker After the release of the residual current-operated circuit breaker, and once the correct operating conditions of the system have been restored, the residual current- operated circuit breaker must be reset.
  • the operating conditions often restore themselves spontaneously, because the fault is of a transient type caused by overvoltages.
  • Such reset normally occurs manually by acting on an appropriately provided reset lever.
  • the user performs the reset after an opening or release of the residual current-operated circuit breaker, he cannot be sure that the fault has been removed. Therefore, when the user performs the reset, a subsequent closely spaced release of the residual current-operated circuit breaker can occur, because the problem has not been solved correctly.
  • the aim of the present invention is to provide an automatic reset device particularly for residual current-operated circuit breakers and the like that allows to check the correct operation and status of the system before resetting the residual current- operated circuit breaker.
  • an object of the present invention is to provide an automatic reset device particularly for residual current-operated circuit breakers that provides the user with assurance of continuity of service by reclosing the residual current-operated circuit breaker after temporary faults, after checking the status of the system before performing the actual reset.
  • Another object of the present invention is to provide an automatic reset device that is furthermore capable of checking the correct connection of the device itself to the system.
  • Another object of the present invention is to provide an automatic reset device that is highly reliable, relatively simple to provide and at competitive costs.
  • an automatic reset device which includes an actuator for automatically resetting a residual current-operated circuit breaker that is connected to an electrical line, upstream of a load, characterized in that it includes control means that is suitable to actuate the actuator, the control means being connected upstream of the residual current-operated circuit breaker and downstream of the residual current-operated circuit breaker, upstream of the load, in order to bypass the residual current-operated circuit breaker when the residual current-operated circuit breaker is released, the control means including a circuit for checking the connection of the reset device to the electrical line and a circuit for detecting leakage current, in order to check for the presence of a leakage current, before actuating the actuator to automatically reset the residual current-operated circuit breaker.
  • Figure 1 is a general circuit diagram of the device according to the present invention
  • Figure 2 is a block diagram of the reset device according to the present invention
  • Figure 3 is a circuit diagram of the reset device according to the present invention.
  • the reset device associated with a residual current-operated circuit breaker, includes control means 1 , which is conveniently connected to a residual current-operated circuit breaker 2 by virtue of connections 3 and 4, which connect the control means 1 downstream of the residual current-operated circuit breaker 2 and upstream of a load 5 on one side and upstream of the residual current-operated circuit breaker 2 by way of connections 6 and 7 on the other side, so as to bypass the residual current-operated circuit breaker, without any connection to the ground system.
  • Figure 1 and the other figures show the electrical line with the phase 8 and the neutral 9.
  • the control means 1 is therefore interposed between the electrical line and the residual current-operated circuit breaker 2 and between the residual current-operated circuit breaker 2 and the load 5, accordingly constituting a bypass of the residual current-operated circuit breaker.
  • An actuation means 10, suitable to actuate the resetting of the residual current- operated circuit breaker 2, is connected to the control board 1 and powered by the line 8, 9 by virtue of the connection of the control board 1 to the line.
  • the control means 1 includes a control unit 15, which is connected to a power supply means 16 so as to derive a control voltage that is equal to half the mains supply voltage of the device.
  • the power supply means furthermore includes a power supply 17 for the control unit.
  • the device furthermore has a circuit for detecting the presence and value of the power supply voltage, designated by the reference numeral 18, which is connected to the control unit 15 and sends to the control unit a response signal 19 related to the presence and value of the supply voltage.
  • a circuit 20 for checking the cables connected to the system, electrically separated from the remaining circuit, is further connected to the control unit 15 in order to verify the correct connection of the cables, i.e., verify that the reset device is correctly connected to the system.
  • the circuit 20 receives in input a signal 21 requesting a check of the connection of the cables and outputs to the control unit 15 a signal 22 that indicates the outcome of the cable check.
  • the device according to th'e invention furthermore includes a circuit 23 for detecting the leakage current of the connected system; this detection occurs by virtue of a unidirectional pulsed voltage derived from the mains voltage, which is closed, in case of fault, on the mains by virtue of the ground; finally, the device includes a circuit 24 for protection against electrical shocks during the system verification cycle.
  • the control unit 15 sends an actuation signal 25 to the thermal actuator 10 in order to activate the reset device.
  • the control means 1 is supplied with power by the closure of a contact 30 exclusively after release of the associated residual current-operated circuit breaker, which opens the contacts 2 and removes power from the system.
  • the control means closes immediately a relay 31 , connecting the system to be verified to the previously described measurement circuits.
  • the control unit 15 sends a signal requesting a check of the cables 21 to the control circuit 20, which checks the connection of the cables, verifying that there is an impedance between test points A and B. This verification indicates correct connection of the device to the system before continuing the test sequence. An impedance value exceeding a preset value prevents the reset device from continuing the sequence.
  • the control unit 15 verifies, by virtue of the circuit 23, the possible presence of an earth leakage current, and if the earth leakage current exceeds a preset threshold it blocks the automatic reclosure of the device.
  • the device reports the anomaly by switching on a LED with a steady light. If the entire first step ends with a positive outcome, the control unit provides power to the thermal actuator 10 in order to reset the device.
  • Such thermal actuator is a hot-wax actuator, which resets the associated residual current-operated circuit breaker, accordingly supplying power to the system connected thereto. If the residual current-operated circuit breaker trips a second time within a preset time, the reset device does not attempt a second reset and remains in a blocked status, which is indicated by the fixed lighting of the above cited LED, until the associated circuit breaker is reset manually.
  • the automatic reset device allows to check both the connection of the reset device and any occurring leakage current before being able to actually actuate the automatic reset of the residual current-operated circuit breaker.
  • the device according to the present invention fully achieves the intended aim and objects, since it allows to perform, prior to an automatic reset operation, a series of checks on the device and on the system in order to perform a reset if the conditions are such as to ensure subsequent correct operation of the system.
  • the device thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims; all the details may furthermore be constituted by other technically equivalent elements.
  • the materials used, as well as the contingent shapes and dimensions may be any according to the requirements and the state of the art.

Abstract

An automatic reset device, particularly for residual current-operated circuit breakers and the like, comprising an actuator (10) for automatically resetting a residual current-operated circuit breaker (2) that is connected to an electrical line (8, 9), upstream of a load; control means (1) for actuating the actuator (10), the control means being connected upstream of the residual current-operated circuit breaker and downstream of the residual current-operated circuit breaker, upstream of the load, in order to bypass the residual current-operated circuit breaker when the residual current-operated circuit breaker is released, the control means including a circuit (20) for checking the connection of the reset device to the electrical line and a circuit (23) for detecting leakage current, in order to check for the presence of a leakage current, before actuating the actuator to automatically reset the residual current-operated circuit breaker.

Description

AUTOMATIC RESET DEVICE PARTICULARLY FOR RESIDUAL CURRENT- OPERATED CIRCUIT BREAKERS AND THE LIKE The present invention relates to an automatic reset device particularly for residual current-operated circuit breakers and the like. More particularly, the invention relates to a device that allows to reset automatically a residual current-operated circuit breaker following its release, after checking the correct operation of the system. As it is known, residual current-operated circuit breakers are normally provided in home and industrial systems in order to prevent a fault current from causing danger to users and to the loads connected to the electric line. Essentially, the residual current-operated circuit breaker, when it detects the fault current, disconnects the line, accordingly interrupting the supply of power to the load or loads arranged downstream. After the release of the residual current-operated circuit breaker, and once the correct operating conditions of the system have been restored, the residual current- operated circuit breaker must be reset. The operating conditions often restore themselves spontaneously, because the fault is of a transient type caused by overvoltages. Such reset normally occurs manually by acting on an appropriately provided reset lever. However, if the user performs the reset after an opening or release of the residual current-operated circuit breaker, he cannot be sure that the fault has been removed. Therefore, when the user performs the reset, a subsequent closely spaced release of the residual current-operated circuit breaker can occur, because the problem has not been solved correctly. The aim of the present invention is to provide an automatic reset device particularly for residual current-operated circuit breakers and the like that allows to check the correct operation and status of the system before resetting the residual current- operated circuit breaker. Within this aim, an object of the present invention is to provide an automatic reset device particularly for residual current-operated circuit breakers that provides the user with assurance of continuity of service by reclosing the residual current-operated circuit breaker after temporary faults, after checking the status of the system before performing the actual reset. Another object of the present invention is to provide an automatic reset device that is furthermore capable of checking the correct connection of the device itself to the system. Another object of the present invention is to provide an automatic reset device that is highly reliable, relatively simple to provide and at competitive costs. This aim and these and other objects that will become better apparent hereinafter are achieved by an automatic reset device, which includes an actuator for automatically resetting a residual current-operated circuit breaker that is connected to an electrical line, upstream of a load, characterized in that it includes control means that is suitable to actuate the actuator, the control means being connected upstream of the residual current-operated circuit breaker and downstream of the residual current-operated circuit breaker, upstream of the load, in order to bypass the residual current-operated circuit breaker when the residual current-operated circuit breaker is released, the control means including a circuit for checking the connection of the reset device to the electrical line and a circuit for detecting leakage current, in order to check for the presence of a leakage current, before actuating the actuator to automatically reset the residual current-operated circuit breaker. Further characteristics and advantages of the invention will become better apparent from the description of a preferred but not exclusive embodiment of the reset device according to the present invention, illustrated by way of non-limiting example in the accompanying drawings, wherein: Figure 1 is a general circuit diagram of the device according to the present invention; Figure 2 is a block diagram of the reset device according to the present invention; and Figure 3 is a circuit diagram of the reset device according to the present invention. With reference to the figures cited above, the reset device according to the present invention, associated with a residual current-operated circuit breaker, includes control means 1 , which is conveniently connected to a residual current-operated circuit breaker 2 by virtue of connections 3 and 4, which connect the control means 1 downstream of the residual current-operated circuit breaker 2 and upstream of a load 5 on one side and upstream of the residual current-operated circuit breaker 2 by way of connections 6 and 7 on the other side, so as to bypass the residual current-operated circuit breaker, without any connection to the ground system. Figure 1 and the other figures show the electrical line with the phase 8 and the neutral 9. The control means 1 , conveniently constituted by a control board, is therefore interposed between the electrical line and the residual current-operated circuit breaker 2 and between the residual current-operated circuit breaker 2 and the load 5, accordingly constituting a bypass of the residual current-operated circuit breaker. An actuation means 10, suitable to actuate the resetting of the residual current- operated circuit breaker 2, is connected to the control board 1 and powered by the line 8, 9 by virtue of the connection of the control board 1 to the line. In detail, the control means 1 includes a control unit 15, which is connected to a power supply means 16 so as to derive a control voltage that is equal to half the mains supply voltage of the device. The power supply means furthermore includes a power supply 17 for the control unit. The device furthermore has a circuit for detecting the presence and value of the power supply voltage, designated by the reference numeral 18, which is connected to the control unit 15 and sends to the control unit a response signal 19 related to the presence and value of the supply voltage. A circuit 20 for checking the cables connected to the system, electrically separated from the remaining circuit, is further connected to the control unit 15 in order to verify the correct connection of the cables, i.e., verify that the reset device is correctly connected to the system. The circuit 20 receives in input a signal 21 requesting a check of the connection of the cables and outputs to the control unit 15 a signal 22 that indicates the outcome of the cable check. The device according to th'e invention furthermore includes a circuit 23 for detecting the leakage current of the connected system; this detection occurs by virtue of a unidirectional pulsed voltage derived from the mains voltage, which is closed, in case of fault, on the mains by virtue of the ground; finally, the device includes a circuit 24 for protection against electrical shocks during the system verification cycle. The control unit 15 sends an actuation signal 25 to the thermal actuator 10 in order to activate the reset device. With reference to the figures, the operation of the reset device according to the present invention is as follows. The control means 1 is supplied with power by the closure of a contact 30 exclusively after release of the associated residual current-operated circuit breaker, which opens the contacts 2 and removes power from the system. The control means closes immediately a relay 31 , connecting the system to be verified to the previously described measurement circuits. The control unit 15 sends a signal requesting a check of the cables 21 to the control circuit 20, which checks the connection of the cables, verifying that there is an impedance between test points A and B. This verification indicates correct connection of the device to the system before continuing the test sequence. An impedance value exceeding a preset value prevents the reset device from continuing the sequence. At this point, the control unit 15 verifies, by virtue of the circuit 23, the possible presence of an earth leakage current, and if the earth leakage current exceeds a preset threshold it blocks the automatic reclosure of the device. If one of the two verifications described above fails, the device reports the anomaly by switching on a LED with a steady light. If the entire first step ends with a positive outcome, the control unit provides power to the thermal actuator 10 in order to reset the device. Such thermal actuator is a hot-wax actuator, which resets the associated residual current-operated circuit breaker, accordingly supplying power to the system connected thereto. If the residual current-operated circuit breaker trips a second time within a preset time, the reset device does not attempt a second reset and remains in a blocked status, which is indicated by the fixed lighting of the above cited LED, until the associated circuit breaker is reset manually. Substantially, the automatic reset device according to the present invention allows to check both the connection of the reset device and any occurring leakage current before being able to actually actuate the automatic reset of the residual current-operated circuit breaker. In practice it has been found that the device according to the present invention fully achieves the intended aim and objects, since it allows to perform, prior to an automatic reset operation, a series of checks on the device and on the system in order to perform a reset if the conditions are such as to ensure subsequent correct operation of the system. The device thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims; all the details may furthermore be constituted by other technically equivalent elements. In practice, the materials used, as well as the contingent shapes and dimensions, may be any according to the requirements and the state of the art.

Claims

CLAIMS 1. An automatic reset device, particularly for residual current-operated circuit breakers and the like, which comprises an actuator for automatically resetting a residual current-operated circuit breaker that is connected to an electrical line, upstream of a load, characterized in that it comprises control means that is suitable to actuate said actuator, said control means being connected upstream of said residual current-operated circuit breaker and downstream of the residual current-operated circuit breaker, upstream of said load, in order to bypass said residual current-operated circuit breaker when said residual current-operated circuit breaker is released, said control means comprising a circuit for checking the connection of said reset device to the electrical line and a circuit for detecting leakage current, in order to check for the presence of a leakage current, before actuating said actuator to reset said residual current-operated circuit breaker. 2. The device according to claim 1 , characterized in that said control means further comprises a circuit for detecting the presence and value of the power supply voltage. 3. The device according to claim 1 , characterized in that said control means comprises a control unit that is suitable to drive said actuator. 4. The device according to one or more of the preceding claims, characterized in that said control means comprises a power supply circuit with a central tap that draws a voltage equal to half the mains voltage and recloses on said mains by virtue of the earth fault, if present. 5. The device according to claim 4, characterized in that the signal used for said check, which is derived from the mains voltage, is of the pulsed unidirectional type. 6. The device according to one or more of the preceding claims, characterized in that said actuator is a thermal actuator. 7. The device according to one or more of the preceding claims, characterized in that said control means are connected to said electrical line by interposing a circuit breaker that is suitable to close following the release of said residual current-operated circuit breaker. 8. The device according to one or more of the preceding claims, characterized in that it comprises a circuit for protection against electrical shocks. 9. The device according to one or more of the preceding claims, characterized in that said circuit for controlling the connection of said reset device to said electrical line is electrically separated within said reset device.
PCT/EP2005/001993 2004-02-27 2005-02-25 Automatic reset device particularly for residual current-operated circuit breakers and the like WO2005086310A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2005800116331A CN1950982B (en) 2004-02-27 2005-02-25 Automatic reset device particularly for residual current-operated circuit breakers and the like
IL177567A IL177567A (en) 2004-02-27 2006-08-17 Automatic reset device particularly for residual current-operated circuit breakers and the like

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP04425125.4 2004-02-27
EP04425125A EP1569314B1 (en) 2004-02-27 2004-02-27 Automatic reset device particularly for residual current-operated circuit breakers and the like

Publications (1)

Publication Number Publication Date
WO2005086310A1 true WO2005086310A1 (en) 2005-09-15

Family

ID=34746216

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/001993 WO2005086310A1 (en) 2004-02-27 2005-02-25 Automatic reset device particularly for residual current-operated circuit breakers and the like

Country Status (9)

Country Link
EP (1) EP1569314B1 (en)
CN (1) CN1950982B (en)
AT (1) ATE371980T1 (en)
DE (1) DE602004008573T2 (en)
ES (1) ES2290657T3 (en)
IL (1) IL177567A (en)
RU (1) RU2323511C1 (en)
WO (1) WO2005086310A1 (en)
ZA (1) ZA200607581B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170110873A1 (en) * 2015-10-14 2017-04-20 Solaredge Technologies Ltd. Fault Detection System and Circuits

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20050901A1 (en) * 2005-05-17 2006-11-18 Bticino Spa ELECTRONIC DEVICE ASSOCIATED WITH AN ELECTRIC EQUIPMENT
ITMI20050896A1 (en) * 2005-05-17 2006-11-18 Bticino Spa ELECTRICAL DEVICE FOR THE CONTROL AND RESET OF A PROTECTION DEVICE
KR100782300B1 (en) * 2007-07-23 2007-12-06 이한식 Apparatus for breaking circuit sensing reverse leakage current
ITMI20071888A1 (en) * 2007-10-02 2009-04-03 Abb Service Srl ELECTRICAL DEVICE FOR LOW VOLTAGE APPLICATIONS.
DE102008005687A1 (en) * 2008-01-23 2009-08-06 Siemens Aktiengesellschaft Control device for safe reconnection of a residual current circuit breaker
ITMI20081092A1 (en) 2008-06-17 2009-12-18 Gewiss Spa CONTROL DEVICE FOR AUTOMATIC RESET EQUIPMENT
FR2947058B1 (en) * 2009-06-18 2012-02-03 Schneider Electric Ind Sas DEVICE FOR TESTING THE PRESENCE OF A SHORT CIRCUIT AND CIRCUIT BREAKER COMPRISING IT
GB2520961A (en) 2013-12-04 2015-06-10 Eaton Ind Netherlands Bv Automatic reclosing alternating current circuit breaker
WO2016083940A1 (en) * 2014-11-27 2016-06-02 Bticino Spa Test circuit for a residual current circuit breaker
ITUA20164207A1 (en) 2016-06-08 2017-12-08 Gewiss Spa COMPACT CONTROL MODULE, FOR AUTOMATIC RESET DEVICES
CA3026852A1 (en) * 2018-02-07 2019-08-07 Goodrich Corporation Fault interrupt module
DE102021212829A1 (en) 2021-11-16 2023-05-17 Walter Biersack Device for charging electric vehicles

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4979070A (en) * 1989-06-13 1990-12-18 Bodkin Lawrence E Automatic reset circuit for GFCI
FR2696054A1 (en) * 1992-09-18 1994-03-25 Serd Sa Etude Realisa Disjonct Differential interrupter detecting current faults - includes comparator checking current fault signal, and time circuit determining time after which connection is re-established
DE19858601A1 (en) * 1998-12-18 2000-06-21 Geyer Ag Earth leakage circuit breaker comprises current which can only be switched on by solenoid switch if mains voltage is applied and test circuit and current detector unit are supplied with sufficient current by voltage supply

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1527455A (en) * 2003-03-06 2004-09-08 华为技术有限公司 Protecting circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4979070A (en) * 1989-06-13 1990-12-18 Bodkin Lawrence E Automatic reset circuit for GFCI
FR2696054A1 (en) * 1992-09-18 1994-03-25 Serd Sa Etude Realisa Disjonct Differential interrupter detecting current faults - includes comparator checking current fault signal, and time circuit determining time after which connection is re-established
DE19858601A1 (en) * 1998-12-18 2000-06-21 Geyer Ag Earth leakage circuit breaker comprises current which can only be switched on by solenoid switch if mains voltage is applied and test circuit and current detector unit are supplied with sufficient current by voltage supply

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170110873A1 (en) * 2015-10-14 2017-04-20 Solaredge Technologies Ltd. Fault Detection System and Circuits
US10819275B2 (en) * 2015-10-14 2020-10-27 Solaredge Technologies Ltd. Method and apparatus for switching current
US11509127B2 (en) 2015-10-14 2022-11-22 Solaredge Technologies Ltd. Method and apparatus for switching current
US11804704B2 (en) 2015-10-14 2023-10-31 Solaredge Technologies Ltd. Method and apparatus for switching current between conductive paths and through a differential current sensor

Also Published As

Publication number Publication date
IL177567A0 (en) 2006-12-10
ATE371980T1 (en) 2007-09-15
RU2323511C1 (en) 2008-04-27
ES2290657T3 (en) 2008-02-16
DE602004008573D1 (en) 2007-10-11
CN1950982A (en) 2007-04-18
DE602004008573T2 (en) 2008-05-21
EP1569314A1 (en) 2005-08-31
EP1569314B1 (en) 2007-08-29
IL177567A (en) 2010-12-30
CN1950982B (en) 2010-05-05
ZA200607581B (en) 2007-11-28

Similar Documents

Publication Publication Date Title
WO2005086310A1 (en) Automatic reset device particularly for residual current-operated circuit breakers and the like
CN108075449B (en) System and method for protecting solid state power controllers
RU2572619C2 (en) Protective cutout device
US7800874B2 (en) Circuit interrupting device with automatic test
JP6101283B2 (en) Circuit device for suppressing arc generated over contact gap of switching member
CN107315151B (en) Method and device for testing the function of an insulation monitoring device
KR101571213B1 (en) fault clearing system and its method for microgrid
CN104901284B (en) Distance protection equipment three-phase PT wire break detection methods and faulty action preventing method
KR102277716B1 (en) Real-time detection and recovery system and its construction method in case of power line failure in distribution system
KR101505176B1 (en) Apparatus and method for detecting failure of bus
CA2365737C (en) Loop restoration scheme for distribution feeders
KR20190067564A (en) Real-time detection and recovery system and its construction method in case of power line failure in distribution system
US20100175970A1 (en) Residual current circuit breaker controlling and auxiliary apparatus, and residual current circuit breaker equipped thereby
KR101622187B1 (en) Fault current limiter
JP7218497B2 (en) Ground fault protection relay system
JP5030894B2 (en) Uninterruptible testing equipment for circuit breakers for wiring
EP2235805A1 (en) Control unit for safely re-enabling a ground fault interrupter
US20150077122A1 (en) Safety device and method for an electric installation
JP5388879B2 (en) Uninterruptible testing device and uninterruptible testing method for circuit breaker for wiring
KR101691928B1 (en) Coordination of protection system and coordination of protection method
EP3255648B1 (en) Compact control module for automatic reset devices
EP2469674A1 (en) Protective device for electrical installations
JP4072961B2 (en) Control device with system interconnection protection function of SOG switch
TWI811020B (en) An automatic locking module with an electric operation for circuit breaker to prevent accidental operation
US11626720B1 (en) Multiphase ground fault circuit interrupter

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2006130750

Country of ref document: RU

Ref document number: 3096/CHENP/2006

Country of ref document: IN

WWE Wipo information: entry into national phase

Ref document number: 2006/07581

Country of ref document: ZA

Ref document number: 200607581

Country of ref document: ZA

WWE Wipo information: entry into national phase

Ref document number: 200580011633.1

Country of ref document: CN

122 Ep: pct application non-entry in european phase